Hydraulic vibration generating device

Abstract

A hydraulic vibration generation device is provided. The device includes a manifold member having an inner volume, a fluid inlet orifice and a fluid outlet orifice. The device further includes a vibration generating member having a channel grooved drive and an off-center weight, and bearing retaining plates. The inner volume receives the vibration generating member within the inner volume. The bearing retaining plate that retain bearings operate to retain the vibration generating member within the inner volume in response to coupling the bearing retaining plate to the manifold member wherein two bearings on opposing ends of the vibration generating member are retained within recesses of the bearing retaining plates. The vibration generating member rotates and generates vibration in response to hydraulic fluid flowing into the manifold member through the inlet orifice and out of the manifold member through the outlet orifice.

The invention claimed is: 
     
       1. A hydraulic vibration generation device comprising:
 a manifold member comprising an inner volume, a fluid inlet orifice and a fluid outlet orifice; 
 a vibration generating member comprising a channel grooved drive and an off-center weight, wherein:
 the vibration generating member is a cylindrical shaft; and 
 the channel grooved drive comprises:
 a channel formed in an outer surface of the shaft around a circumference of the shaft the channel forming a bottom surface having a circumference less than the circumference of the shaft, the channel forming a lip on either side of the bottom surface and extending transverse from the bottom surface of the channel to the outer surface of the shaft, the bottom surface having a constant width; and 
 a plurality of recessed grooves formed in the bottom surface of the channel, wherein each recessed groove of the plurality of recessed grooves extend along the width of the channel and are evenly spaced around the circumference of the channel; and 
 
 
 two retaining plates, wherein:
 the inner volume receives the vibration generating member within the inner volume; 
 the retaining plates retain the vibration generating member within the inner volume in response to coupling the retaining plates to opposing ends of the manifold member; and 
 the vibration generating member rotates and generates vibration in response to hydraulic oil flowing into the inner volume of the manifold member through the inlet orifice, wherein the hydraulic oil flows through the channel and a portion of the hydraulic oil engages the plurality of recessed grooves to rotate the vibration generating member, and the hydraulic oil flows out of the inner volume of the manifold member through the outlet orifice. 
 
 
     
     
       2. The device of  claim 1 , wherein the vibration generating member comprises at least one void formed into the shaft to create the off-center weight shaft. 
     
     
       3. The device of  claim 1 , wherein the manifold member is formed as a unitary member. 
     
     
       4. The device of  claim 1 , wherein inlet orifice and the outlet orifice of the manifold member is formed in the manifold member at any angle. 
     
     
       5. The device of  claim 1 , further comprising a sealing member coupled between the retaining plate and the manifold member. 
     
     
       6. The device of  claim 1 , further comprising two bearings, wherein each bearing is operably coupled within a recess of one of the retaining plates, wherein the retaining plates are coupled to manifold member with bolts. 
     
     
       7. The device of  claim 1 , wherein the manifold member is configured to couple to an external device for vibrating the external device. 
     
     
       8. The device of  claim 1 , wherein the vibration generating member is rotatable in one direction in response to flowing the hydraulic oil into the manifold member through the inlet orifice and out the outlet orifice and is rotatable in an opposite direction in response to flowing of the hydraulic oil into the manifold member through the outlet orifice and out the inlet orifice.